Preset shape text rotation values are read in a few places and stored in
moRotation. With these changes, moRotation is always read unchanged, but
multiplied by -1 when it's used.

Change-Id: I633d665c21daa69e15fa828a43300f10d2bf2054
Reviewed-on: https://gerrit.libreoffice.org/13561Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>